Srila Rupa Gosvami has described that the holy name of the Lord can be chanted by liberated souls, but almost all the souls we have to initiate are conditioned. It is advised that one chant the holy name of the Lord without offenses and according to the regulative principles, yet due to their past bad habits they violate these rules and regulations. Thus the regulative principles for worship of the Deity are also simultaneously essential.

Srila Prabhupada, CC. Adi, 7.76, ppt